Several check engine lights on the dashboard after a reflash

FlashPro questions & answers specific to the FN2 European Civic Type R
tu5j4
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Re: Several check engine lights on the dashboard after a ref

Post by tu5j4 » Mon Jul 23, 2012 2:55 am

My OBD2 diagnostics show these codes:
U0122 FCAN malfunction ECU to VSA
U0131 FCAN malfunction ECU to EPS
I think there must be more of these codes as my power steering doesn`t work aswell as a few other electric components. Their lights all appear on the dasboard.

I tried to flash out theses malfunctions with the "clear DTC`s" button but that doesn`t work at all. Is it meant for something else?
Still have the lights flashing on the dashboard.
Can someone give me the correct procedure how to get rid of the fault codes?
Please help me out here.

nunoctr
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Re: Several check engine lights on the dashboard after a ref

Post by nunoctr » Mon Jul 23, 2012 7:13 am

have you try to disconect the battery for 30m ? (I know this work in other cars like peugeot's)
But probably only with honda tools.


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Re: Several check engine lights on the dashboard after a ref

Post by tu5j4 » Tue Jul 24, 2012 1:10 am

I know this battery trick works on many older Peugeots as I have had more than 20 of them but I don`t think it will work on this Honda FN2. But I can try it one time.

Thanks for the link Nuno. Might be helpful for me.

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Re: Several check engine lights on the dashboard after a ref

Post by tu5j4 » Wed Aug 01, 2012 11:46 pm

I now have an additional DTC code:
U102 volume or voltage not right.

Strange. I checked my battery and it shows 13.3 volt. However, when I reflash to the factory Honda map there`s a short noticeable sentence on my laptop which says the battery voltage is 10.6 volt.
Why does the ecu thinks that when the actual battery voltage is 13.3 volt? Got the impression this is what prevents me solving the VTC problems with my car.

Did some google search and found that the U102 code says something like lost communication with transfer case control module.
That sounds like a major problem or not?

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Spunkster
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Re: Several check engine lights on the dashboard after a ref

Post by Spunkster » Thu Aug 02, 2012 10:02 am

Have you gone to the Online menu and clicked on Return ECU to Stock?

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Re: Several check engine lights on the dashboard after a ref

Post by tu5j4 » Fri Aug 03, 2012 12:35 am

Yes, tried it several times but to no result.
Do I have to start the car on that factory map and let it idle for some time so the ecu learns to know that there`s 13.3 volt of the battery available?
Haven`t done that yet.

Got the impresssion with flashpro it`s possible to delete P codes, but no U codes. Or am I wrong?

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Re: Several check engine lights on the dashboard after a ref

Post by Hondata » Fri Aug 03, 2012 9:35 am

The ECU many read less voltage than the battery voltage due to voltage drops in the wiring and connectors.

ECU related DTC may be cleared, but non-ECU DTCs cannot be cleared (ABS, Airbag, VSA, transmission, cluster etc).
Hondata

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Re: Several check engine lights on the dashboard after a ref

Post by tu5j4 » Sat Aug 04, 2012 1:43 am

Thanks for the quick respons. But that flashpro possibly can`t clear DTC`s like ABS, VSA, Powersteering, etc. worries me. Because those flashlights can be seen on my dashboard.

Does that mean I have to contact a Honda dealer and hope they have the equipment to correct the ECU?

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Re: Several check engine lights on the dashboard after a ref

Post by Spunkster » Mon Aug 06, 2012 10:01 am

This is something that only a Honda dealer will be able to help you with.

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Re: Several check engine lights on the dashboard after a ref

Post by tu5j4 » Tue Aug 07, 2012 12:19 am

Thanks for the help. I will contact a Hondadealer to see if they can solve these problems.

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Re: Several check engine lights on the dashboard after a ref

Post by tu5j4 » Fri Aug 10, 2012 3:13 am

Well a Honda technician came along with a special Honda scanning toolcomputer and tried to get rid of the DTC codes.
Surprisingly enough he wasn`t able to find the cause of the problems after scanning through the oem computer.
He thought the PGM-II had a major problem.
We decided to trailer the car to the dealer so they can check all the car`s cables to see if there`s a failure.
Should be interesting to see what they will come up with.

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Re: Several check engine lights on the dashboard after a ref

Post by nunoctr » Mon Aug 20, 2012 7:51 am

any news?

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Re: Several check engine lights on the dashboard after a ref

Post by tu5j4 » Tue Aug 21, 2012 3:02 am

Got the car back Nuno. It`s running again. The mechanic spent 2 days trying to figure out what happened. He couldn`t find anything but in the end I helped him out and we remapped the ecu with some extra external voltage addition and this surprisingly helped. The powersteering worked again. After that we were able to get rid of the DTC codes on the dasboard aswell. Strange.
I can only think of one possible cause. That should be the voltage drop when my nitrous kit is working at full throttle on a 150 bhp nitrous shot. It takes lots of electrical currency from the battery and probably also the rest of the electrical system including the ECU.
That means my nitrous kit can`t be used again or I should go back to a small 50 bhp nitrous shot. Could be wrong here. It`s just an idea.

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